Finding the Third Proportional to 611,080 and 897,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,080 : 897,891.50 = 897,891.50 : x
2. Step 2: Convert to fraction form
   611,080/897,891.50 = 897,891.50/x
3. Step 3: Cross multiply
   611,080x = 897,891.50 × 897,891.50
4. Step 4: Simplify right side
   611,080x = 806,209,145,772.25
5. Step 5: Solve for x
   x = 806,209,145,772.25/611,080
6. Step 6: Final answer
   x = 1,319,318.49